What is a Refraction? When a refraction is performed, an instrument called a phoropter is placed in front of your eyes and various lens combinations are shown until the clearest vision is obtained. Refractions are usually performed by trained technicians. Your doctor reviews your refraction and makes recommendations. You will either require no vision correction or be categorized as myopic, hyperopic, astigmatic, or presbyopic. If you complain of blurred vision, a refraction will be performed.
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